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I want to share my experience of using Tokina 28-70 f/2.8 (1st ver. for Nikon) with a focal reducer. I got a Viltrox NF-M43X Speed Booster and tested it with my Tokina. You can check stills from BMPCC. Picture quality with focal reducer is as good as with dumb adapter but I couldn't achieve focus at infinity at all focal distances with the focal reducer despite of trying to adjust it manually by moving the lens unit of focal reducer. The lens is parfocal with dumb adapter but with the Viltrox focal reducer it is not parfocal What focal reducers do you use with this lens? Is the Tokina 28-70 parfocal with it? Which focal reducer do you suggest and I want to be able to use it with a new BMPCC 4K (image circle 21.44mm). Metabones 0.64 for BMCC is not suitable for a BMPCC 4K because it covers 18.2mm only.

I would suggest the Metbones XL or Ultra for thr new Pocket Camera 4K. Since the lens is parfocal with the dumb adapter, it should be also with the correct SB, the one yiu are using has an incorrect back focus (FFD) setting.
Cheers

So I ordered a Tokina 28-70mm 2.6-2.8 EF from eBay but after testing it, it seems that it doesn't reach anywhere close to infinity focus on the wide end. does anyone know of a fix to this or will I have to return? Im using a GH5 with a Speedbooster XL. Here is a comparison between 28mm and 70mm

So I ordered a Tokina 28-70mm 2.6-2.8 EF from eBay but after testing it, it seems that it doesn't reach anywhere close to infinity focus on the wide end. does anyone know of a fix to this or will I have to return? Im using a GH5 with a Speedbooster XL. Here is a comparison between 28mm and 70mm
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